Camera enclosure assembly
a technology of camera enclosure and assembly, which is applied in the field of optical inspection technologies, can solve the problems of not offering sufficient flexibility in the adjustment of the position of the optical sensing field
Active Publication Date: 2014-04-29
CENT DE RES & DEV IND DU QUEBEC
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AI Technical Summary
Benefits of technology
This solution provides enhanced flexibility and accuracy in scanning the surface profiles of moving articles by allowing the optical sensing field to be precisely aligned with the scanning plane, improving the detection of geometrical and surface defects.
Problems solved by technology
A problem with the known camera enclosures is that they do not offer sufficient flexibility of adjustment of the position of the optical sensing field with respect to the scanning plane.
Method used
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[0018]Referring now to FIG. 1, there is shown an example of inspection apparatus as generally designated at 10, which is designed for simultaneously scanning the profile of four adjacent surfaces of an article 12, which is a wooden board to be inspected in the present example. It is to be understood that the optical inspection apparatus and method as described below may be used to inspect articles of any nature, material or shape. The profile data can be used to detect profile-related board characteristics including geometrical and surface defects such as wane, holes, knots, cracks etc., using known detection techniques such as disclosed in prior U.S. published Patent application no. 2010 / 0188500 and U.S. Pat. No. 6,122,065 naming the same assignee as of the present invention. The detected characteristics are typically fed to a cut optimizer software providing a cutting solution into subdivided products from each board, producing an optimum yield in term of either economic value or ...
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Abstract
An enclosure assembly for a camera is designed to be mounted on the frame of an optical inspection apparatus for scanning the profile of a surface of an article moving along a travel path axis, the profile being associated with a reference axis orthogonal to a reference plane parallel to the travel path axis. The camera is part of a profile sensor unit and has an optical sensing field directed toward the travel path axis to define a scanning zone associated with the surface as intersected by the optical sensing field, the profile unit further having a laser source directing at angle with the optical sensing field a fan-shaped laser beam toward the scanning zone to define an associated scanning plane transverse to the travel path axis, to generate sensor output data related the profile of the article surface. The enclosure assembly comprises an enclosure body secured to the apparatus frame and including a front end wall provided with an opening protected by an optical element made of light transparent material, and a device for mounting the camera within the enclosure body such that the camera has its optical sensing field directed toward the opening. The enclosure assembly further comprises a device mechanically coupled to the enclosure body for displacing thereof in a direction perpendicular to the profile reference axis and parallel to the scanning plane to adjust the position of the optical sensing field with respect to the scanning plane.
Description
FIELD OF THE INVENTION[0001]The present invention relates to the field of optical inspection technologies, and more particularly to camera enclosure assemblies.BACKGROUND OF THE INVENTION[0002]During the past years, systems for scanning the surface of moving articles have been developed and applied for grading or quality control purposes in many high volume manufacturing applications such as found in the automotive, consumer electronics, agricultural, food or lumber processing industries. Such scanning systems typically use profile sensors based on laser triangulation to measure geometrical and other 3D surface characteristics of the inspected articles, which sensors makes use of digital cameras adapted to capture reflected light from a fan-shaped laser beam toward a scanning zone to define an associated scanning plane transverse to the travel path axis. In some applications, there is a need for protecting the cameras from the article conveying path, particularly from fragments that...
Claims
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IPC IPC(8): G03B17/48G01V8/00G01N21/86G03B17/00
CPCG03B17/02H04N5/247G03B17/561H04N23/90
Inventor GAGNON, RICHARDSANSCHAGRIN, GAETANLEPINE, DENIS
Owner CENT DE RES & DEV IND DU QUEBEC